An Efficient Carrier Phase Synchronization Technique for High-Order M-QAM–OFDM

In this correspondence, we propose a blind carrier phase synchronization algorithm for high-order M-ary quadrature amplitude modulation-orthogonal frequency division multiplexing (M-QAM-OFDM) systems, which can effectively recover residual frequency offset (RFO) in the presence of intercarrier interference (ICI). The proposed algorithm performs frequency and phase synchronization by using post-fast Fourier transform (FFT) demodulated signals without the aid of reference signals (e.g., pilots, guard intervals, and virtual carriers), and is simple to implement. By analyzing its open-loop characteristics, we show that the proposed algorithm is superior to the conventional decision-directed (DD) scheme for high-order M-QAM-OFDM systems.


Published in:
IEEE Transactions on Signal Processing, 56, 8, 3789-3794
Year:
2008
Publisher:
IEEE
ISSN:
1053-587X
Laboratories:




 Record created 2017-12-19, last modified 2018-03-17


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